Talks, Lectures（2010）

1. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, Oberwolfach Meeting on Progress in Surface Theory, 2010.5.3.-5.7, Mathematisches Forschungsinstitut Oberwolfach, Germany, 2010.5.4. PDF of Talk

2. Harmonic maps of surfaces and integrable system approach (a survey), a keynote lecture (100 minutes), RIMS Meeting "The Progress and View of Harmonic Map Theory", (2010.6.2-6.4), 2010.6.2.

3. Differential Geometry of Lagrangian Submanifolds and Related Hamiltonian Variational Problems, Geometry Seminar, Department of Mathematics, Graduate University of Chinese Academy of Sciences, organizers : Professor Jiagui Peng, Professor Xiaoxiang Jiao, 2010.6.9.

4. Differential Geometry of Lagrangian Submanifolds and Related Hamiltonian Variational Problems, Colloquium talk, School of Mathematical Sciences, Laboratory of Mathematics and Complex Systems, organizers : Professor Zizhou Tang, Dr. Jianquan Ge , 2010.6.11.

5. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, Workshop on Hypersurface Geometry and Integrable Systems, (2010.8.24-8.27), Mathematical Institute, Tohoku University, Kawai Hall， organizers: Professor Reiko Miyaoka (Tohoku University), Professor Martin Guest (Tokyo Metropolitan University), 2010.8.26.

6. Harmonic maps into symmetric spaces and integrable system approach (a survey), Osaka City University Meeting "Gravity・Geometry・Elementary Particles", (2010.9.23-25), Osaka City University Media Center 10th floor， organizers: Professor Hideki Ishihara (OCU, Physics), Professor Hiroshi Itoyama (OCU, Physics), Professor Kenichi Nakao (OCU, Physics), Professor Yukinori Yasui (OCU, Physics), 2010.9.24. PDF of Talk

7. On Lagrangian submanifolds obtained from isoparametric hypersurfaces, Fukuoka University Geometry Meeting, "Geometry and Something", Fukuoka University Seminar House (2010.10.8-11), 2010.10.10.

8. Geometry of Lagrangian submanifolds and isoparametric hypersurfaces, I, II. The 14th Kyungpook National University International Workshop on Differential Geometry Workshop & The 3rd KNUGRG-OCAMI Joint Differential Geometry Workshop (2010.11.4-6), Kyungpook National University, Korea， organized by Professor Young Jin Suh (Kyungpook National University), (I) 2010.11.4, (II) 2010.11.5.

9. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, Spanish-Japanese Workshop on Differential Geometry, organizers: Professors Leonor Ferrer (Granada), Wayne Rossman (Kobe), Francisco Martin (Granada), Masaaki Umehara (Osaka), Antonio Ros (Granada), Kotaro Yamada (Tokyo Inst. of Tech.), Department of Geometry and Topology, University of Granada, Granada, Spain, February 14 (Mon)-18 (Fri), 2011. 2011.2.14. PDF of Talk

Talks, Lectures（2009）

1. Differential Geometry of Lagrangian Submanifolds and Hamiltonian Variational Problems, A Harmonic Map Fest, A conference in honour of Professor John C. Wood to mark his 60th birthday and 35 years of involvement in harmonic maps. September 7 - September 10, 2009, (Cagliari, Italy), 2009.9.7.

2. Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, Tokyo Metropolitan University Geometry Seminar (organizers：Professor Martin Guest，Dr. Tasashi Sakai), 2009.10.2.

3. On Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, II， OCAM I Differential Geometry Seminar, Osaka City Advanced Mathematical Institute, 2009.10.14.

4. Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, Fukuoka University Geometry Meeting, "Geometry and Something", Fukuoka University Seminar House (2009.11.20-11.23), 2009.11.21.

5. Concentrated lectures "Harmonic Maps and Integrable System Theory : Loop group actions and infinite dimensional integrable systems" (1) Connection and curvature, Zero curvature form of harmonic map equation, (2) Loop group action and DPW formula， (3) Uniton transform and uniton solutions， (4) Spectral curve construction and algebraically completely integrable systems， Tohoku University GCOE Spring School "From Harmonic Maps and Integrable System Theory to Quantumn Cohomology", (2010.3.9-3.11) 2010.3.10-11.

6. Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, III (with Hui Ma), Geometry Session, general talk (15 minutes), Annual Meeting of Mathematical Society of Japan, Keio University(Yagami Campus), 2010.3.24.

1. Differential geometry of Lagrangian submanifolds and related variational problems, One-Day Workshop on Differential Geometry (organizer : Professor Yng-Ing Lee), Taida Institute for Mathematical Sciences, National Taiwan University, 2008.4.1.

2. On the deformation of certain minimal Legendrian submanifolds, International Conference on Differential Geometry, University of Science & Technology of China and Beijing Normal University, May 23 - May 27, 2008 (Hefei, CHINA), 2008.5.24.

3. Differential geometry of Lagrangian submanifolds and related variational problems, Geometric Analysis Seminar, Peking University, 2008.5.28.

4. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, RIMS Meeting "Differential Geometry of Submanifolds and Related Topics" (2008.6.23-6.25), 2008.6.25.

5. On Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces， Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2008.7.16.

6. Differential Geometry of Lagrangian Submanifolds and Related Variational Problems, The 55th Geometry Symposium (at Hirosaki University, 2008.8.22-8.25), a plenary talk， 2008.8.24.

7. Differential geometry of Lagrangian submanifolds and related variational problems, Niigata Differential Geometry Meeting "Differential Geometry and Almost complex structures", -For the retirement of Professor Kouei Sekigawa from Niigata University‐ (2008.11.5-11.7), Niigata University，2008.11.6.

8. On the deformations of certain minimal Legendrian submanifolds, I&II, Korea・Kyungpook National University Mini International Workshop on "Lie Group Actions on Manifolds and Related Fields " (2008.11.7-11.8), (I) 2008.11.7.(90min.), (II) 2008.11.8.(120min).

9. Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, Fukuoka University Geometry Meeting, "Geometry and Something", Fukuoka University Seminar House (2008.11.21-11.24), 2008.11.21.

10. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, The 4th Geometry Conference for the friendship of China and Japan, Chern Institute of Mathematics, Nankai University, Tianjin, China (2008.12.22-12.27), 2008.12.23.

11. On Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, Colloquim talk at Department of Mathematical Sciences, Tsinghua University, Peking, China, 2008.12.29.

12. On the deformation of certain minimal Legendrian submanifolds, Riemannian Geometry Seminar (Leader: Professor Zizhou Tang), Beijing Normal University, Beijing, China, 2008.12.29.

13. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, II, Workshop on Geometry at OIST "Geometry related to Variational Problems and Integrable Systems", Okinawa Institute of Science and Technology (2009.1.30-1.31), 2009.1.31.

14. On Lagrangian submanifolds in complex hyperquadrics obtained from isoparametric hypersurfaces, NCTS/TPE & TIMS Joint Geometry Seminar, National Taiwan University，Taipei, Taiwan, 2009.2.17.

15. Differential Geometry of Lagrangian Submanifolds and Hamiltonian variational problems, OCAMI-TIMS Joint International Workshop on Differential Geometry and Geometric Analysis, Osaka City University (2009.3.9-3.10), 2009.3.9．

16. Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, II (with Hui Ma), Geometry Session, general talk (15 minutes), Annual Meeting of Mathematical Society of Japan, University of Tokyo, 2009.3.26.

1. Classification of homogeneous Lagrangian submanifolds in complex hyperquadrics， Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2007.4.11.

2. Homogeneous Lagrangian submanifolds in complex hyperquadrics and Hamiltonian stabilty, Lecture (60 minutes), Chern Institute of Mathematics, Nankai University, Tianjin, China （Director：Professor Weiping Zhang), 2007.5.10.

3. Willmore conjecture and integrable systems (after M.U.Schmidt, I.A.Taimanov etc.), RIMS Meeting "Submanifold Theory related to the Integrable Systems and Geometric Analysis" (2007.7.11-7.13, organizer: Professor Seiichi Udagawa), 2007.7.13.

4. Hamiltonian stability of the Gauss images of homogeneous isoparametric hypersurfaces, (with Hui Ma), Geometry Session, general talk (15 minutes), Autumn Meeting of Mathematical Society of Japan, Tohoku University, 2007.9.21.

5. Differential geometry of Lagrangian submanifolds and related variational problem， OCAMI Differential Geometry Workshop on "Finite and Infinite Dimensional Lie Theoretic Methods in Submanifold Geometry" (2007.10.1-10.5), 2007.10.5.

6. Differential geometry of Lagrangian submanifolds and related variational problems I&II, Korea・Kyungpook National University Mini International Workshop on "Lagrangian Submanifolds and Related fields" (2007.12.6-12.7), twice two hours lectures， (I) 2007.12.6., (II) 2007.12.7.

7. Lagrangian submanifolds in Kaehler manifols and related variational problems, Workshop on "Nonlinear Analysis on Curves and Surfcaes" (2007.12.25-12.27), Omiya Sonic City College, Saitama University, 2007.12.25.

8. On minimal Legendrian submanifolds, Fukuoka University Geometry Meeting, "Geometry and Something", Fukuoka University Seminar House (2008.1.11-1.14), 2008.1.14.

9. On the deformation of certain 3-dimensional minimal Legendrian submanifolds, Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2008.1.23.

10. On deformation of a 3-dimensional certain minimal Legendrian submanifold, Geometry Session, general talk (10 minutes), Annual meeting of Mathematical Society of Japan, Kinki University, 2007.3.23.

1. The moduli spaces of complex Fermi curves and the Willmore functional, (with Takashi Otofuji, Seiichi Udagawa), RIMS Meeting "For Further Advance of The Submanifold Theory" (2006.7.10-7.12, organizer : Professor Naoya Ando), 2006.7.12.

2. On Lagrangian submanifolds and isoparametric hypersurfaces in spheres, LMS Durham Symposium "Methods of Integrable Systems in Geometry", (2006.8.11-8.20. University of Durham, UK), CMC Surfaces and Related Topics Seminar, 2006.8.20. PDF

3. On Lagrangian submanifolds obtained as Gauss images of isoparametric hypersurfaces, (with Hui Ma), Geometry Session, general talk (15 minutes), Autumn meeting of Mathematical Society of Japan, Osaka City University, 2006.9.20.

4. Lagrangian submanifolds in complex hyperquadrics and isoparametric hypersurfaces in spheres， Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2006.10.4.

5. On Lagrangian submanifolds and isoparametric hypersurfaces in spheres， Meeting celebrating the sixtieth birthday of Professor Hajime Urakawa, "Global Analysis and Differential Geometry -- their relations to Information Sciences -- ", Graduate School of Information Sciences, Tohoku University (2006.10.21-10.22), 2006.10.22.

6. On Lagrangian submanifolds and isoparametric hypersurfaces in spheres, (180 minutes), Peking Normal University Geometry Seminar (Leader：Professor Zizhou Tang), 2006.10.26.

7. On Lagrangian submanifolds and isoparametric hypersurfaces in spheres, (60 minutes), Colloquim talk at Department of Mathematical Sciences, Tsinghua University, Peking, China, 2006.10.31.

8. Approach to the Willmore conjecture via integrable systems (survey) I・II, Submanifolds・Yuzawa Meeting 2006 (2006.11.29-12.1), 2005.11.30.

9. On Lagrangian submanifolds in complex hyperquadrics and isoparametric hypersurfaces in spheres, Differential Geometry Seminar (Leader：Professor Yuanlong Xin), Fudan University, Shanghai, China, 2006.12.13.

10. Lagrangian submanifolds in complex hyperquadrics and isoparametric hypersurfaces in spheres, The Second China-Japan Conference on Differential Geometry（2006.12.16-12.18), Yunnan Normal University, Kunming, China, 2006.12.17.

11. Homogeneous Lagrangian submanifolds in complex hyperquadrics, Fukuoka University Geometry Meeting, "Geometry and Something", Fukuoka University Seminar House (2007.2.1-2.4), 2007.2.3.

12. Lagrangian Submanifolds, Moment Maps and Hamiltonian Stability, Meijo University 3rd Geometry Meeting, "Crossing Area of Geometric Structures and Submanifolds" , Meijo University Tower 75 (2007.3.6-3.8), 2007.3.6.

13. Homogeneous Lagrangian submanifolds in complex hyperquadrics and Hamiltonian stabilty, Colloquim talk at Department of Mathematics, Tokyo University of Science, 2007.3.16.

14. Classification of homogeneous Lagrangian submanifolds in complex hyperquadrics, (with Hui Ma), Geometry Session, general talk (15 minutes), Annual meeting of Mathematical Society of Japan, Saitama University, 2006.3.27.

1 Stability and rigidity of certain special Lagrangian cones, RIMS meeting "Differential Geometry and Submanifold Theory" (2005.6.13-6.15), 2005.6.14.

2 Stability and rigidity of certain special Lagrangian cones, Geometry Seminar of Osaka University, Department of Mathematics, Osaka University, 2005.7.4.

3 Hamiltonian stability of certain Lagrangian submanifolds and related problems, Colloquim talk at Department of Mathematical Sciences, Tsinghua University, Peking, China, 2005.7.20.

4. Stability and rigidity of certain special Lagrangian cones, Colloquim talk at Department of Mathematical Sciences, Tsinghua University, Peking, China, 2005.7.22.

5. Lectures on Differential Geometry of Lagrangian Submanifolds and Minimal Submanifolds, Special lectures at Department of Mathematical Sciences, Tsinghua University, Peking, China, （3 lectures） (1) 2005.7.25. (2) 2005.7.27. (3) 2005.7.29.

6. Stability and rigidity of special Lagrangian cones over certain symmetric spaces, Geometry Session, general talk (15 minutes), Autumn meeting of Mathematical Society of Japan, Okayama University, 2005.9.22.

7. On moduli spaces of special Lagrangian submanifolds, Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2005.10.5.

8. Hamitonian stability of parallel Lagrangian submanifolds in complex space forms, Fukuoka University Geometry Meeting celebrating the sixtieth birthday of Professor Yoshihiko Suyama, "Geometry and Something", Fukuoka University Seminar House (2005.10.7-10.10), 2005.10.9.

9. On Hamiltonian stability of certain Lagranginan submanifolds in Kaehler manifolds, Differential Geometry Seminar at Osaka City Advanced Mathematical Institute, 2005.10.26.

10. The deformation and stability of certain special Lagrangian cones, Submanifolds・Yuzawa Meeting 2005 (2005.11.23-11.25), 2005.11.24.

11. On Hamiltonian stability of certain Lagrangian subamnifolds and related problems, Geometry Seminar of Tohoku University, Mathematical Institute, Tohoku University, 2005.12.13.

12. Hamiltonian stability of parallel Lagrangian submanifolds in complex space forms, Geometry Session, general talk (15 minutes), Annual meeting of Mathematical Society of Japan, Chuo University, 2006.3.26.